Here's more about the place and a map.

http://www.beerme.com/breweries/us/ca/9333.shtml

There's lots of free parking in the area. It's also on the CalTrain line if you don't want to drive. Get off at the Sunnyvale station and walk towards the Murphy Square fountain. You'll be on Evelyn and Murphy, just cross the street and it's on the right-hand side.